extensions/microprofile-metrics/runtime/src/main/java/org/apache/camel/quarkus/component/microprofile/metrics/runtime/CamelMicroProfileMetricsRecorder.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
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package org.apache.camel.quarkus.component.microprofile.metrics.runtime;

import io.quarkus.runtime.RuntimeValue;
import io.quarkus.runtime.annotations.Recorder;
import io.smallrye.metrics.MetricRegistries;
import org.apache.camel.CamelContext;
import org.apache.camel.component.microprofile.metrics.event.notifier.context.MicroProfileMetricsCamelContextEventNotifier;
import org.apache.camel.component.microprofile.metrics.event.notifier.exchange.MicroProfileMetricsExchangeEventNotifier;
import org.apache.camel.component.microprofile.metrics.event.notifier.route.MicroProfileMetricsRouteEventNotifier;
import org.apache.camel.component.microprofile.metrics.message.history.MicroProfileMetricsMessageHistoryFactory;
import org.apache.camel.component.microprofile.metrics.route.policy.MicroProfileMetricsRoutePolicyFactory;
import org.apache.camel.main.MainListener;
import org.apache.camel.main.MainListenerSupport;
import org.apache.camel.spi.ManagementStrategy;
import org.eclipse.microprofile.metrics.MetricRegistry;
import org.jboss.logging.Logger;

@Recorder
public class CamelMicroProfileMetricsRecorder {

    public RuntimeValue<MetricRegistry> createApplicationRegistry() {
        return new RuntimeValue<>(MetricRegistries.get(MetricRegistry.Type.APPLICATION));
    }

    public RuntimeValue<MainListener> createContextConfigurerListener(CamelMicroProfileMetricsConfig config) {
        return new RuntimeValue<>(new MicroProfileMetricsContextConfigurerListener(config));
    }

    public void configureCamelContext(CamelMicroProfileMetricsConfig config,
            RuntimeValue<CamelContext> camelContextRuntimeValue) {
        CamelContext camelContext = camelContextRuntimeValue.getValue();
        ManagementStrategy managementStrategy = camelContext.getManagementStrategy();

        if (config.enableRoutePolicy) {
            camelContext.addRoutePolicyFactory(new MicroProfileMetricsRoutePolicyFactory());
        }

        if (config.enableExchangeEventNotifier) {
            managementStrategy.addEventNotifier(new MicroProfileMetricsExchangeEventNotifier());
        }

        if (config.enableRouteEventNotifier) {
            managementStrategy.addEventNotifier(new MicroProfileMetricsRouteEventNotifier());
        }

        if (config.enableCamelContextEventNotifier) {
            managementStrategy.addEventNotifier(new MicroProfileMetricsCamelContextEventNotifier());
        }
    }

    private static class MicroProfileMetricsContextConfigurerListener extends MainListenerSupport {
        private static final Logger LOGGER = Logger.getLogger(MicroProfileMetricsContextConfigurerListener.class);
        private final CamelMicroProfileMetricsConfig config;

        public MicroProfileMetricsContextConfigurerListener(CamelMicroProfileMetricsConfig config) {
            this.config = config;
        }

        @Override
        public void configure(CamelContext camelContext) {
            if (!config.enableMessageHistory) {
                return;
            }

            if (!camelContext.isMessageHistory()) {
                LOGGER.warn(
                        "MessageHistory is not use and will be enabled as required by MicroProfile Metrics for MessageHistory");

                camelContext.setMessageHistory(true);
            }

            camelContext.setMessageHistoryFactory(new MicroProfileMetricsMessageHistoryFactory());
        }
    }
}